TY - JOUR
T1 - FIBER-OPTIC CURRENT AND VOLTAGE METERS.
AU - Taniuchi, Tetsuo
AU - Kamada, Osamu
AU - Hayashi, Yoshiaki
AU - Takiuchi, Sumiko
AU - Toda, Kazuro
AU - Kawabata, Akemi
AU - Tsujimoto, Yoshinobu
PY - 1983
Y1 - 1983
N2 - Sensors for fiber optic current and voltage meters have been developed by making use of the Faraday effect and the Pockels effect, respectively. For low-current detection, a newly developed mixed rare-earth iron garnet crystal of the composition of (Y//0//. //8//1Tb//0//. //1//9)//3 Fe//5O//1//2 is applied, while, for high current measurement, ZnSe crysal is used. The current sensors prepared with these materials cover the current induced magnetic field ranging from 0. 06 Oe to 1850 Oe. The optical output fluctuation is within plus or minus 1. 5% over the temperature range from minus 20 degree C to 120 degree C. The voltage sensor using LiNbO//3 crystal measures voltage from 0. 05v to 200v with an output fluctuation of plus or minus 1. 0% between the temperature of minus 20 degree C and 120 degree C. In this sensor, light is incident on the Z-face, and two opposite Z-faces with transparent electrodes are shorted to eliminate the disturbance of the pyroelectric effect.
AB - Sensors for fiber optic current and voltage meters have been developed by making use of the Faraday effect and the Pockels effect, respectively. For low-current detection, a newly developed mixed rare-earth iron garnet crystal of the composition of (Y//0//. //8//1Tb//0//. //1//9)//3 Fe//5O//1//2 is applied, while, for high current measurement, ZnSe crysal is used. The current sensors prepared with these materials cover the current induced magnetic field ranging from 0. 06 Oe to 1850 Oe. The optical output fluctuation is within plus or minus 1. 5% over the temperature range from minus 20 degree C to 120 degree C. The voltage sensor using LiNbO//3 crystal measures voltage from 0. 05v to 200v with an output fluctuation of plus or minus 1. 0% between the temperature of minus 20 degree C and 120 degree C. In this sensor, light is incident on the Z-face, and two opposite Z-faces with transparent electrodes are shorted to eliminate the disturbance of the pyroelectric effect.
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M3 - Article
AN - SCOPUS:0020830906
VL - 29
SP - 70
EP - 80
JO - National technical report
JF - National technical report
SN - 0028-0291
IS - 5
ER -